GB839910A - Shell mold manufacture - Google Patents
Shell mold manufactureInfo
- Publication number
- GB839910A GB839910A GB907/58A GB90758A GB839910A GB 839910 A GB839910 A GB 839910A GB 907/58 A GB907/58 A GB 907/58A GB 90758 A GB90758 A GB 90758A GB 839910 A GB839910 A GB 839910A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wax
- mould
- slip
- silica
- tartaric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 8
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract 3
- 239000011975 tartaric acid Substances 0.000 abstract 3
- 235000002906 tartaric acid Nutrition 0.000 abstract 3
- 229920000084 Gum arabic Polymers 0.000 abstract 2
- 241000978776 Senegalia senegal Species 0.000 abstract 2
- 239000000205 acacia gum Substances 0.000 abstract 2
- 235000010489 acacia gum Nutrition 0.000 abstract 2
- 239000010427 ball clay Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 239000000701 coagulant Substances 0.000 abstract 1
- 239000008119 colloidal silica Substances 0.000 abstract 1
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 abstract 1
- 239000005350 fused silica glass Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229920000609 methyl cellulose Polymers 0.000 abstract 1
- 239000001923 methylcellulose Substances 0.000 abstract 1
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- 229910052851 sillimanite Inorganic materials 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
- 229910052845 zircon Inorganic materials 0.000 abstract 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
In the manufacture of a shell mould (see Group XXII) by the lost wax process the wax is heated rapidly in a furnace at a temperature between 750 DEG C. and 1150 DEG C. to allow a portion of the wax adjacent the mould to be removed before the wax expands and distorts the mould. A wax pattern is dipped in a slip containing powdered silica or high silica glass and fine ball clay suspended in a vehicle comprising a coagulant such as tartaric acid, a water-soluble gum such as gum arabic, colloidal silica, and a wetting agent of tartaric acid, such as sodium dioctylsulphosuccinate. Zircon, alumina, calcined fire clay, and sillimanite can also be used in the slip. After tipping, the wax pattern is allowed to drain and is sprinkled with pulverized fused silica or high silica glass and is then allowed to dry for one hour at room temperature. The pattern may be subsequently dipped and dried five times to build up the desired thickness. For the subsequent slip the ball clay may be omitted and the tartaric acid and gum arabic replaced by an aqueous solution of methyl cellulose. The pulverised silica which is sprinkled on the slip may be coarser towards the outside of the mould. The mould may be sintered simultaneously with removal of the wax pattern. Specification 442,526 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US839910XA | 1957-01-16 | 1957-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB839910A true GB839910A (en) | 1960-06-29 |
Family
ID=22181939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB907/58A Expired GB839910A (en) | 1957-01-16 | 1958-01-09 | Shell mold manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB839910A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372177A (en) * | 1993-05-13 | 1994-12-13 | Foster; Glenn H. | Method and apparatus for removing wax from casting mold |
| CN104439072A (en) * | 2014-11-21 | 2015-03-25 | 柳州金特机械有限公司 | Processing method for surface quality of castings |
-
1958
- 1958-01-09 GB GB907/58A patent/GB839910A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372177A (en) * | 1993-05-13 | 1994-12-13 | Foster; Glenn H. | Method and apparatus for removing wax from casting mold |
| CN104439072A (en) * | 2014-11-21 | 2015-03-25 | 柳州金特机械有限公司 | Processing method for surface quality of castings |
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